Ploughing is to aeration as manuring is to...........

Choose the correct alternative for the given relation.

Baldness : Hair

Liquid is to Fluidity as Comedian is to...........?

Choose the correct alternative for the word belongs to the same group.

Bleat : Bray : Grunt

Choose the correct alternative for the given relation.

Roster : Duty : : Inventory : ?

Hygrometer is to Humidity as Sphygmomanometer is to